精油中性同位素分离:一种真实性评估工具?
Lorenzo Cucinotta1, Gemma De Grazia1, Paola Donato1
1Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina 98168, Italy.
Journal of chromatography. A
|September 27, 2023
概括
这项研究引入了一种新的分析方法,通过同时分析和同位素数据来评估西西里精油的真实性. 真正的油在关键烯的反体之间显示出不同的碳同位素值,这表明了独特的生物合成途径.
科学领域:
- 分析化学 分析化学
- 有机化学 有机化学
- 食品科学 食品科学 食品科学
背景情况:
- 评估精油的真实性对于质量控制和消费者安全至关重要.
- 传统的分析奇拉和同位素数据的方法通常需要单独的分析运行,增加时间和资源消耗.
- 之前的研究强调了烯档案在精油认证中的重要性.
研究的目的:
- 开发一种单一,高效的分析方法来评估西西里精油的真实性.
- 同时评估目标烯元件的奇拉和同位素数据.
- 基于对抗体同位素分离的生物合成途径的潜在差异的研究.
主要方法:
- 开发一种与同位素比质谱和并行单方四极检测 (Es-MDGC-C-IRMS/qMS) 结合的反选择性多维气体染色学.
- 在单个分析运行中同时评估等离子过量和碳同位素比 (δ13C).
- 对于精确的同位素分析而言,对异构体对进行基线分离.
主要成果:
- 开发的Es-MDGC-C-IRMS/qMS方法显著减少了分析时间,溶剂,电力和样品消耗.
- 对真正的西西里兰油的分析显示,α-和β-平烯的反体之间存在明显的δ13C值.
- 观察到的同位素差异表明这些烯的生物合成途径的变化.
结论:
- 这种新的分析方法提供了一个有效和全面的工具,用于评估精油的真实性.
- 在烯中观察到的对抗体特异性同位素分离,为它们的生物合成提供了新的见解.
- 这项研究为食品真实性验证和可追溯性的先进方法铺平了道路.
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